elib
DLR-Header
DLR-Logo -> http://www.dlr.de
DLR Portal Home | Imprint | Privacy Policy | Contact | Deutsch
Fontsize: [-] Text [+]

Non-equilibrium parameter for a hybrid Fokker-Planck/ DSMC scheme

Hepp, Christian and Grabe, Martin and Hannemann, Klaus (2018) Non-equilibrium parameter for a hybrid Fokker-Planck/ DSMC scheme. In: 31st International Symposium on Rarefied Gas Dynamics. 31st International Symposium on Rarefied Gas Dynamics 2018, 23.-27. Juli 2018, Glasgow, Scotland.

Full text not available from this repository.

Official URL: http://www.jwfl.ac.uk/event_detail.cfm?pid=07C7020B-AC36-4F5B-BA23-1BE3EC1C67D9

Abstract

Numerical simulation of hypersonic rarefied gas flows requires modelling of non-equilibrium flow phenomena, like e. g. shock waves. While such non-equilibrium flows can be simulated by the highly accurate direct simulation Monte-Carlo (DSMC) algorithm, computational effort for DSMC increases quadratically with decreasing Knudsen numbers. Therefore it is a common practice to couple DSMC with less accurate, but more efficient flow solvers in areas where the resolution of DSMC is not required. A recent approach for such a flow solver employs the kinetic Fokker-Planck (FP) model. Like in DSMC, the FP model simulates the stochastic motion of a set of particles through the computational domain which suggest a simple coupling of both methods. No collisions must be calculated in the FP approach and so larger cell and timestep sizes than by DSMC calculations can be used. Because of this, the FP model holds the potential to be more efficient than DSMC where Knudsen number is small. Here, a hybridization scheme for the FP and DSMC algorithms is presented.

Item URL in elib:https://elib.dlr.de/119439/
Document Type:Conference or Workshop Item (Speech)
Title:Non-equilibrium parameter for a hybrid Fokker-Planck/ DSMC scheme
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Hepp, ChristianChristian.Hepp (at) dlr.deUNSPECIFIED
Grabe, MartinMartin.Grabe (at) dlr.deUNSPECIFIED
Hannemann, Klausklaus.hannemann (at) dlr.deUNSPECIFIED
Date:July 2018
Journal or Publication Title:31st International Symposium on Rarefied Gas Dynamics
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Direct Simulation Monte Carlo (DSMC), Fokker-Planck, Hypersonic Flow, Cylinder
Event Title:31st International Symposium on Rarefied Gas Dynamics 2018
Event Location:Glasgow, Scotland
Event Type:international Conference
Event Dates:23.-27. Juli 2018
Organizer:University of Strathclyde
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Transport
DLR - Research area:Raumfahrt
DLR - Program:R RP - Raumtransport
DLR - Research theme (Project):R - Wiederverwendbare Raumfahrtsysteme und Antriebstechnologie
Location: Göttingen
Institutes and Institutions:Institute for Aerodynamics and Flow Technology > Spacecraft, GO
Deposited By: Hepp, Christian
Deposited On:23 Nov 2018 09:12
Last Modified:26 Nov 2018 17:08

Repository Staff Only: item control page

Browse
Search
Help & Contact
Information
electronic library is running on EPrints 3.3.12
Copyright © 2008-2017 German Aerospace Center (DLR). All rights reserved.